149902864 has 20 divisors (see below), whose sum is σ = 295199980. Its totient is φ = 73722240.

The previous prime is 149902849. The next prime is 149902867. The reversal of 149902864 is 468209941.

It can be written as a sum of positive squares in 2 ways, for example, as 3686400 + 146216464 = 1920^2 + 12092^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149902864.

It is not an unprimeable number, because it can be changed into a prime (149902867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75819 + ... + 77770.

It is an arithmetic number, because the mean of its divisors is an integer number (14759999).

Almost surely, 2^149902864 is an apocalyptic number.

It is an amenable number.

149902864 is a deficient number, since it is larger than the sum of its proper divisors (145297116).

149902864 is a wasteful number, since it uses less digits than its factorization.

149902864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153658 (or 153652 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 149902864 is about 12243.4825111159. The cubic root of 149902864 is about 531.2145682667.

The spelling of 149902864 in words is "one hundred forty-nine million, nine hundred two thousand, eight hundred sixty-four".